[PATCH 6.9 263/374] i3c: master: svc: change ENXIO to EAGAIN when IBI occurs during start frame

Greg Kroah-Hartman
2024-06-06T14:10:36Z

From: Frank Li <Frank.Li@nxp.com>

[ Upstream commit 7f3d633b460be5553a65a247def5426d16805e72 ]

svc_i3c_master_xfer() returns error ENXIO if an In-Band Interrupt (IBI)
occurs when the host starts the frame.

Change error code to EAGAIN to inform the client driver that this
situation has occurred and to try again sometime later.

Fixes: 5e5e3c92e748 ("i3c: master: svc: fix wrong data return when IBI happen during start frame")
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20240506164009.21375-2-Frank.Li@nxp.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/i3c/master/svc-i3c-master.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/i3c/master/svc-i3c-master.c b/drivers/i3c/master/svc-i3c-master.c
index 5ee4db68988e2..a2298ab460a37 100644
--- a/drivers/i3c/master/svc-i3c-master.c
+++ b/drivers/i3c/master/svc-i3c-master.c
@@ -1080,7 +1080,7 @@ static int svc_i3c_master_xfer(struct svc_i3c_master *master,
* and yield the above events handler.
*/
if (SVC_I3C_MSTATUS_IBIWON(reg)) {
- ret = -ENXIO;
+ ret = -EAGAIN;
*actual_len = 0;
goto emit_stop;
}
--
2.43.0